Chapter 4: Operation

4-1 Panel Buttons, Indicator Lights, and Switches

Microprocessor Controllers

Standard chillers use a microprocessor-based PID controller. These controllers are modular, self-contained units that can slide from their mounting housing. They are factory set and adjusted; no field adjustment to the internal controls are necessary. Their standard operation range is 30ºF to 65ºF (-1ºC to 18ºC). See Figure 7: Typical Portable Chiller Microprocessor Controller.

E5CK Controller

 

Indicator

 

Name

 

Description

 

 

 

 

 

 

 

 

 

 

 

 

PV

 

Process Value

 

During normal operation, the top LED display on

 

 

 

 

 

 

 

 

LED

 

the controller displays the actual process

 

8.8.8.8

 

 

 

 

 

 

 

 

 

 

temperature. It also lists parameter symbols during

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

setup and error messages if an error occurs.

 

 

 

 

 

 

 

 

 

 

 

SV

 

Set Value LED

 

During normal operation, the green bottom LED

 

 

 

 

 

 

 

 

 

 

display on the controller displays the process set

 

8.8.8.8

 

 

 

 

 

 

 

 

 

 

 

 

 

point you want the chiller to maintain. It also

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

displays parameter and pre-set function values

 

 

 

 

 

 

 

 

 

 

during set up.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Out 1 LED

The orange OUT1 LED lights when the control

 

 

 

 

 

 

 

 

 

 

output energizes the hot-gas bypass solenoid

 

OUT1

 

 

 

valve.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Out 2 LED

The orange OUT2 LED lights whenever the

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

process temperature is four degrees or more above

 

OUT2

 

 

 

the “To Process” setpoint. The compressor then

 

 

 

 

comes on and runs until the temperature at the “To

 

 

 

 

 

 

 

 

 

 

Process” thermocouple is three degrees below the

 

 

 

 

 

 

 

 

 

 

setpoint.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

MANU LED

 

The orange MANU LED is not used and does not

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

light.

 

MANU

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

STOP

 

 

 

 

 

 

Stop LED

The orange STOP LED is not used.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RMT LED

 

The orange RMT LED is lit during remote

 

RMT

 

 

 

 

 

 

 

 

communication operation.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

AT

 

 

 

 

 

 

AT LED

 

The orange AT LED flashes during auto-tuning.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2-40 HP Portable Chillers

Chapter 4: Operation

29 of 70

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Sterling A0554831 manual Operation, Panel Buttons, Indicator Lights, and Switches, Microprocessor Controllers
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A0554831 specifications

The Sterling A0554831 is a versatile and powerful tool designed for a range of applications, particularly in the industrial and construction sectors. Known for its robust construction and reliability, it has gained popularity among professionals and DIY enthusiasts alike.

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Safety features are also a priority with the Sterling A0554831. Many models are equipped with overload protection and safety switches that prevent accidental activation, safeguarding the user during operation. Additionally, some variants may include LED indicators that provide real-time information about battery life or operational status, enhancing overall user experience.

In conclusion, the Sterling A0554831 stands out in the market for its combination of durability, performance, and versatility. With advanced technologies that cater to a wide range of applications and a design focused on user comfort and safety, this tool is an excellent choice for professionals looking for dependable and effective solutions in their work. Whether you are a seasoned professional or a casual DIYer, the Sterling A0554831 is well-equipped to handle your needs with ease and efficiency.
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